I agree to some extent, he 100% is to blame for the hurt that Annie & their boys had to go through. Also the hurt/confusion to Kairo (although I do believe he would've had a relationship with the kw's if Lauren was normal). He did his interview holding his hands up & taking responsibility for it all.
However, Lauren, is the nasty evil head that played it all like a game & is still dragging it out pretending that she was a victim but it's really to try stay relevant/be a 'celeb'. Used blackmail to get whatever she wanted money wise from Kyle. She didn't care enough to think about the effects/hurt caused to Kairo, Annie or RRR whilst playing her little game.
When you compare how they have both acted during & after all of this, then you can see who the main villain is. Lauren wanted to 'take them down' & had evil intentions of ruining Annie's family. Kyle's just thought with his dick & been too thick to realise what may come after that.